A rare, nearly flawless copy of Superman's comic-book debut has sold for a super-powered price: $3.2 million.

New York comics dealers Stephen Fishler and Vincent Zurzolo said Monday they submitted Sunday's record-setting bid in the eBay auction for Action Comics No. 1, the 1938 book in which the superhero first appeared. It's believed to be the highest price ever paid for a comic book, surpassing $2.1 million for a similarly high-quality copy of the same book in 2011.

'It's hard to believe that a kid's 10-cent comic could be worth that much money, but it is Superman. That's an iconic thing,' Fishler said. 'It's the first time anybody saw what a superhero was like.'

EBay confirmed the price but said it couldn't yet disclose the buyer's name.